can anybody tell me in a simple koi lover language how this trickle tower works and why is it more efficient
In laymans terms, the purpose of a Trickle Tower (or Baki Shower) is to promote the growth of Aerobic Bacteria. Aerobic Bacteria (or Good Bugs as some people say) is the MAIN bacteria that keeps our pond water in prestine condition. Takes care of our Algae problem, Ammonia problem ... and processes the waste products in our pond.
You hear so much about Surface Area of a (Biological) Filtration System. That's because the first few inches of you Biological system (approx 6"-8") is where Most of your Aerobic Bacteria resides .. mainly because of the Oxygen Content. I like referring to this area as: "Live Water!" where as the further down you go, the "Deader" the water .. which mean less Oxygen!
The other Bacteria called "Anearobic (hope I spelled that right) Bacteria", or "Bad Bugs" live in this area. Where things begin to rot and deteriorate creating a breeding ground for diseases as well as releasing toxic gasses .. ie: methane gas.
Go to somebody's pond where they have a scum built up at the bottom of their pond or in their filtration system. Get a handful of this scum and smell it! Would you like to live in that mess?
As you can see: A trickle tower WOULD HAVE the bigger surface area where water would just run through and as in a Shower, the shower effect creates the bubbles which carries (gues what? ) OXYGEN! So even though the material is in a tuble like container, the water and the oxygen continually runs through it creating a DAMP but well Oxygenated environment. MORE SURFACE area for Aerobic bacteria to thrive in and multiply. NOTE: that this tower is NOT submerged underwater. If it is, you're defeating it's purpose.
I hope this makes sense.